A drop-in replacement PCB for the Amiga Agnus chip
This is WORK IN PROGRESS. If you generate gerbers and order PCBs from this source you are doing so completely at your own risk!.
Rev. 2D, design using a PLCC-84 homebrew plug
Rev. 2B, design using a PLCC-84-plug
When ordering from JLCPCB select:
Specify Layer Sequence: Yes
L1(Top layer): F_Cu.gbr
L2(Inner layer1): GND_Cu.gbr
L3(Inner layer2): VCC_Cu.gbr
L4(Bottom layer): B_Cu.gbr
Remove Order Number:
Specify a location
This will notify JLC where to put the order number, they will replace the "JLCJLCJLCJLC" silkscreen label.
Building Rev. 2B
REV 1A
REV 1B
| Position | Name/Value | Package | Notes |
|---|---|---|---|
| U1 | 10M04SCU169C8G | BGA-169 11.0x11.0mm_Layout13x13 | FPGA Intel MAX 10 10M04SCU169C8G |
| U2 | LM1117-3.3 | SOT-223 | Low-Dropout Linear Regulator 3.3 Volt |
| U3-U6 | SN74CBTD16210 | TSSOP-48 6.1x12.5mm_P0.5mm | 20-BIT FET Bus switch with level shifting, high-speed TTL-compatible. 74CBTD16210DGGR |
| U7 | 74LVC1G07 | 5-TSSOP, SC-70-5, SOT-353 (2.0 mm × 1.25mm) | 74LVC1G07 |
| R1 | Resistor 4.7k or 10k Ω | 0603 | Pull-up resistor for PAL/NTSC selection for 8372 Agnus FPGA firmware/pinout |
| R2 | Resistor 4.7k or 10k Ω | 0603 | Pull-up resistor for pin 41 (PAL/NTSC-selector for A500 Rev.6A/A2000/A3000-pinout) since A500 Rev.6A doesn't have pull-up on motherboard like A2000/A3000/A3000T have. Only needed for A500 Rev.6A. but doesn't hurt to populate anyway. |
| RN1 | CAY16-103J4LF RES ARRAY 4 Resistors 10k Ω | 1206 | CAY16-103J4LF |
| RN2 | CAY16-103J4LF RES ARRAY 4 Resistors 10k Ω | 1206 | --"-- |
| C1-3 | Capacitor 10uF | 1206 | |
| C4,C5,C8,C11 | Capacitor 1uF | 0805 | |
| C6,C7,C9,C10 | Capacitor 0.1uF = 100nF | 0805 | |
| C12-C19 | Capacitor 0.01uF = 10nF | 0603 | |
| C20 | Capacitor 0.1uF = 100nF | 0603 | |
| C21-C24 | Capacitor 0.01uF = 10nF | 0603 | |
| JTAG1 | SMT Pin Header Male | SMT 2 x 5 Pin 2.0mm pitch |
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